Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca6f57ad6a9d1b51…

MALICIOUS

PDF

52.3 KB Created: 2020-08-09 13:25:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 909702419584c6140b936b55ba990f09 SHA-1: 33712acd31b2025afe9ceaa58b3a19ddd3e5ca8e SHA-256: ca6f57ad6a9d1b51045c2c2d4853281dc159163429c7839be9b5ac1eb95e636e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=speak+now+1+student+book+pdf+download'. This URL is designed to lure users into downloading a PDF, likely as part of a phishing or scam campaign. The document body, though heavily obfuscated, also contains this URL, reinforcing its role as the primary lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=speak+now+1+student+book+pdf+download In PDF document text
    • http://files.pecd.us/uploads/1/3/2/7/132712373/fotutonuse_jimurekuzizof_nisix_nubidu.pdfIn PDF document text
    • http://rizeret.charterinsg.com/uploads/1/3/0/7/130775934/4767057.pdfIn PDF document text
    • http://files.carolynspearromance.com/uploads/1/3/1/8/131856991/gadokapupe.pdfIn PDF document text
    • http://turegu.refugejc.com/uploads/1/3/1/1/131164250/82dc4a92.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4106/2040/files/ditobaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/roporegapugomesud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2246/6720/files/17792660037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9898/7926/files/60097761894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7484/5858/files/worksheets_for_4_year_olds_free_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mubexuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0467/1646/files/guxevivafonakofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0928/6050/files/tuvomunuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/handbook_of_applied_cryptography_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5376/8095/files/acetic_acid_manufacturing_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4637/7374/files/xutogurewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6213/1869/files/periodic_table_ionic_radii.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007fcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FCD 5224 bytes
SHA-256: 15ddca44148bc4f8dd67a57b8e5b27c9c620d194222d6000bfeac2ab18d5fb70
font_01_sfnt_off000091b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91B9 11088 bytes
SHA-256: b1525fe7fabb5efc7f44d36ff293eee46092621e302e39e5b8d620531e5f6a99
font_02_sfnt_off0000b5b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5B0 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

Open this report in the interactive analyzer, or submit your own file for analysis.